There are many elastomeric joint sealant applications in construction such as structural glazing, weatherproofing, and insulating glass fabrication, etc. Each sealant joint requires unique durability functions to perform well through building life cycle. The use of elastomeric joints in bathrooms and kitchens is one area which requires durable sealing. In this application, anti-fungal durability is a primary function of the sealant during the building life cycle. Premature fungus growth on the sealant is a big problem for general contractors as well as for the inhabitants due to costly rework and poor sanitation. Accordingly, when chemists design a sealant, they must take into account various parameters. These not only include formulation components but also the test conditions in order to demonstrate long term fungal durability. This paper reviews several biocide options against various industry standards for fungus resistance performance to suggest making new test methods for the construction sealant industry.